The GNU project has a hypertext system called Info which
allows the same source file to be either printed as a
paper manual, or viewed using info. It is possible to use
the info program from inside Emacs, or to use the stand-
alone version described here.

Log message:
Update to 6.5
Changelog:
6.5 (12 September 2017)
* info:
. some bugs fixed:
. a bug where a segfault could happen in the regex search, for
example when the user entered a single \ as the search string
. another bug which could make nodes inaccessible in long "split"
info files
. a bug where it was not possible to follow a cross-reference
that was split across more than one line has been fixed
. do not fall back to a man page if following a cross-reference in an
info file failed
. if looking for a file failed, do not convert the name of a file to
lower-case and look for it again
* texinfo.tex
. some faulty definitions for Unicode characters have been changed or
removed
. fix indentation in table of contents for entries that are split
across multiple lines
* texi2dvi
. a bug that broke the processing of LaTeX files that did not
use BibTeX has been fixed
* texi2any
. output the encoding declaration of a HTML file earlier so it
will always occur within first 1024 bytes of file
. `INLINE_INSERTCOPYING' removed as a customization variable
6.4 (23 June 2017)
* texi2any:
. for HTML output, place section names before the manual in page
titles, instead of after them, so it is easier to distinguish pages
if titles are truncated
. starting points for ordered lists beginning with 0 or a letter of
the alphabet are output as attributes on the <ol> tag, as was
case for Texinfo 4.13 and earlier
. a bit faster
. some discrepancies in paragraph formatting between Perl extension
modules and interpreted Perl modules have been fixed
. `MACRO_BODY_IGNORES_LEADING_SPACE' customization variable removed,
and `indent_menu_descriptions' is no longer a possible value for
`TREE_TRANSFORMATIONS' (as these features did not work as
documented)
* info:
. the `up-line' and `down-line' commands now are like the other
scrolling commands and are no longer confined to a single node
(depending on the value of `scroll-behaviour')
. supplying the --all option with --index-search displays a list
of matching index entries
. the style variables like `link-style' can now be set while info
is running
. display bug fixed where color could be turned off prematurely
. several other bugs fixed
. better portability in test suite
. do not fall back to showing the dir node if a manual isn't found
. Do not attempt any kind of conversion of CR LF line endings,
except on MS-DOS/Windows, when it is done unconditionally. (This
replaces a more complicated approach, where this conversion would
take place if there was a problem finding a node in a file.) The
main effect of this change is that Info files with CR LF line
endings, which would have been produced on MS-DOS/Windows with old
versions of makeinfo, are only supported on such operating systems.
. a few of the key bindings under --vi-keys have been changed for
consistency or to match the documentation
* texinfo.tex
. a DVI file with a single empty page can be output again, which
restores the behavior from Texinfo 6.0 and earlier
* Distribution
. autoconf 2.69, automake 1.15, gettext 0.19.8